View/Booking: Adds an null/assoc check for results of the commonsbook…

…ing_booking_filter

Adds also an WP_DEBUG logging entry

src/View/Booking.php

@@ -230,8 +230,33 @@ public static function getBookingListData( int $postsPerPage = 6, \WP_User $user
 
 				// If search term was submitted, filter for it.
 				if ( ! $search || count( preg_grep( '/.*' . $search . '.*/i', $rowData ) ) > 0 ) {
-					$rowData['actions']         = $actions;
-					$bookingDataArray['data'][] = apply_filters( 'commonsbooking_booking_filter', $rowData, $booking );
+					$rowData['actions'] = $actions;
+
+					/**
+					 * Default assoc array of row data and the booking object, which gets added to the booking list data result.
+					 *
+					 * See $rowData in this function, for the valid keys.
+					 *
+					 * @since 2.7.3
+					 *
+					 * @param array                         $rowData assoc array of one row booking data
+					 * @param \CommonsBooking\Model\Booking $booking booking model of one row booking data
+					 */
+					$filteredRowData = apply_filters( 'commonsbooking_booking_filter', $rowData, $booking );
+
+					// Only includes valid row data objects
+					if ( isset( $filteredRowData ) && is_array( $filteredRowData ) ) {
+						if ( WP_DEBUG ) {
+							// Logs absent keys, relative to the original row data keys, could cause problems
+							$absentKeys = array_diff_key( $filteredRowData, $rowData );
+							if ( count( $absentKeys ) > 0 ) {
+								error_log( 'After commonsbooking_booking_filter: Filtered rows have missing keys: ' . join( ',', array_keys( $absentKeys ) ) ); // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_error_log
+							}
+						}
+					} else {
+						continue;
+					}
+					$bookingDataArray['data'][] = $filteredRowData;
 				}
 			}
 

tests/php/View/BookingTest.php

@@ -7,9 +7,11 @@
 
 final class BookingTest extends CustomPostTypeTest {
 
+	private int $bookingId;
+
 	protected function setUp(): void {
 		parent::setUp();
-		$this->createBooking(
+		$this->bookingId = $this->createBooking(
 			$this->locationId,
 			$this->itemId,
 			time() - 86400,
@@ -26,4 +28,36 @@ public function testGetBookingListData() {
 		$bookings = Booking::getBookingListData();
 		$this->assertTrue( $bookings['total'] == 1 );
 	}
+
+	public function testGetBookingListData_withNullFilter() {
+		wp_set_current_user( self::USER_ID );
+
+		$nullCallback = function ( $rowData, $bookingObject ) {
+			return NULL;
+		};
+
+		add_filter( 'commonsbooking_booking_filter', $nullCallback );
+
+		$bookings = Booking::getBookingListData();
+		$this->assertTrue( $bookings['total'] == 0 );
+
+		remove_filter( 'commonsbooking_booking_filter', $nullCallback );
+	}
+
+	public function testGetBookingListData_withSimpleFilter() {
+		wp_set_current_user( self::USER_ID );
+
+		$simpleFilter = function ( $rowData, $bookingObject ) {
+			return $rowData['postID'] === $this->bookingId;
+		};
+
+		add_filter( 'commonsbooking_booking_filter', $simpleFilter );
+
+		$bookings = Booking::getBookingListData();
+		$this->assertTrue( $bookings['total'] == 1 );
+
+		remove_filter( 'commonsbooking_booking_filter', $simpleFilter );
+	}
+
+
 }